Don't show supervised user as "already on this device" while they're being imported.
[chromium-blink-merge.git] / cc / raster / tile_task_runner.h
blob234ca6f04ab5fc2be423e5d775de7e79cc99c27b
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CC_RASTER_TILE_TASK_RUNNER_H_
6 #define CC_RASTER_TILE_TASK_RUNNER_H_
8 #include <bitset>
9 #include <vector>
11 #include "base/callback.h"
12 #include "cc/raster/task_graph_runner.h"
13 #include "cc/resources/resource_format.h"
15 namespace cc {
16 class ImageDecodeTask;
17 class RasterTask;
18 class Resource;
19 class RasterBuffer;
21 class CC_EXPORT TileTaskClient {
22 public:
23 virtual scoped_ptr<RasterBuffer> AcquireBufferForRaster(
24 const Resource* resource) = 0;
25 virtual void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) = 0;
27 protected:
28 virtual ~TileTaskClient() {}
31 class CC_EXPORT TileTask : public Task {
32 public:
33 typedef std::vector<scoped_refptr<TileTask>> Vector;
35 virtual void ScheduleOnOriginThread(TileTaskClient* client) = 0;
36 virtual void CompleteOnOriginThread(TileTaskClient* client) = 0;
37 virtual void RunReplyOnOriginThread() = 0;
39 // Type-checking downcast routines.
40 virtual ImageDecodeTask* AsImageDecodeTask();
41 virtual RasterTask* AsRasterTask();
43 void WillSchedule();
44 void DidSchedule();
45 bool HasBeenScheduled() const;
47 void WillComplete();
48 void DidComplete();
49 bool HasCompleted() const;
51 protected:
52 TileTask();
53 ~TileTask() override;
55 bool did_schedule_;
56 bool did_complete_;
59 class CC_EXPORT ImageDecodeTask : public TileTask {
60 public:
61 typedef std::vector<scoped_refptr<ImageDecodeTask>> Vector;
63 // Overridden from TileTask:
64 ImageDecodeTask* AsImageDecodeTask() override;
66 protected:
67 ImageDecodeTask();
68 ~ImageDecodeTask() override;
71 class CC_EXPORT RasterTask : public TileTask {
72 public:
73 typedef std::vector<scoped_refptr<RasterTask>> Vector;
75 // Overridden from TileTask:
76 RasterTask* AsRasterTask() override;
78 const Resource* resource() const { return resource_; }
79 const ImageDecodeTask::Vector& dependencies() const { return dependencies_; }
81 protected:
82 RasterTask(const Resource* resource, ImageDecodeTask::Vector* dependencies);
83 ~RasterTask() override;
85 private:
86 const Resource* resource_;
87 ImageDecodeTask::Vector dependencies_;
90 // kNumberOfTaskSets must be greater or equal to the number of values in
91 // TileManager::NamedTaskSet.
92 // TODO(reveman): Use template specialization to make it easy for client code to
93 // check at compile time that the number of supported task sets is correct.
94 static const size_t kNumberOfTaskSets = 3;
95 typedef size_t TaskSet;
96 typedef std::bitset<kNumberOfTaskSets> TaskSetCollection;
98 class CC_EXPORT TileTaskRunnerClient {
99 public:
100 virtual void DidFinishRunningTileTasks(TaskSet task_set) = 0;
101 virtual TaskSetCollection TasksThatShouldBeForcedToComplete() const = 0;
103 protected:
104 virtual ~TileTaskRunnerClient() {}
107 struct CC_EXPORT TileTaskQueue {
108 struct CC_EXPORT Item {
109 class TaskComparator {
110 public:
111 explicit TaskComparator(const RasterTask* task) : task_(task) {}
113 bool operator()(const Item& item) const { return item.task == task_; }
115 private:
116 const RasterTask* task_;
119 typedef std::vector<Item> Vector;
121 Item(RasterTask* task, const TaskSetCollection& task_sets);
122 ~Item();
124 RasterTask* task;
125 TaskSetCollection task_sets;
128 TileTaskQueue();
129 ~TileTaskQueue();
131 void Swap(TileTaskQueue* other);
132 void Reset();
134 Item::Vector items;
137 // This interface can be used to schedule and run tile tasks. The client will
138 // be notified asynchronously when the set of tasks marked as "required for
139 // activation" have finished running, when tasks marked "required for draw"
140 // have finished running, and when all scheduled tasks have finished running.
141 // The client can call CheckForCompletedTasks() at any time to dispatch
142 // pending completion callbacks for all tasks that have finished running.
143 class CC_EXPORT TileTaskRunner {
144 public:
145 // Set the client instance to be notified when finished running tasks.
146 virtual void SetClient(TileTaskRunnerClient* client) = 0;
148 // Tells the worker pool to shutdown after canceling all previously scheduled
149 // tasks. Reply callbacks are still guaranteed to run when
150 // CheckForCompletedTasks() is called.
151 virtual void Shutdown() = 0;
153 // Schedule running of tile tasks in |queue| and all dependencies.
154 // Previously scheduled tasks that are not in |queue| will be canceled unless
155 // already running. Once scheduled, reply callbacks are guaranteed to run for
156 // all tasks even if they later get canceled by another call to
157 // ScheduleTasks().
158 virtual void ScheduleTasks(TileTaskQueue* queue) = 0;
160 // Check for completed tasks and dispatch reply callbacks.
161 virtual void CheckForCompletedTasks() = 0;
163 // Returns the format to use for the tiles.
164 virtual ResourceFormat GetResourceFormat() = 0;
166 protected:
167 virtual ~TileTaskRunner() {}
170 } // namespace cc
172 #endif // CC_RASTER_TILE_TASK_RUNNER_H_